An electric heater marked 1200 w operates 3 hours/day in a house. What
will be the cost of energy to operate it for 5 days at Rs.2.00 per unit of
energy?
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4
Explanation:
load=1200w
daily consumption=1200*3=3600w
=3.6kwh
daily cost =3.6*2=7.2rs
5 days cost=5*7.2= rs. 36
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